Hubungan Kekuatan Otot Lengan Dan Bahu Terhadap Kemampuan Hasil Servis Atas B…

based on observations of the author at the time of carrying out Observations On the country Junior women's team 4 Pekanbaru, a description of the research data is made up of two variables namely variables i.e. non arm and shoulder muscular strength (X) variable and tied to the ability of the results of the service top (Y). Power measurement is performed with the ekspanding dynameter against 8 s…